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Your present location:Home >> Plastic tower internals >> Material and material properties

Material
Plastic tower internals, tower packing can be made from the following materials:
PE(Polyethylene)
PP,PPH(Polypropylene,also thermo-stabilized)
PVC,C-PVC((Polyvinylchloride,also post-chlorinated)
PVDF((Polyvinyldenefluoride-“Kynar”)
PTFE ((Polytetrafluoroethylene-“Teflon”)
PFA(Perfluoralkoxylalkane)
ETFE,ECTFE(Ethylene-Tetrafluorothylene,Ethylene,Ethylene-Chlorotrifluoroethlyene-“Halar”)
Other
Plastic material performance

Name

Performance

Resistance

Maximum working temperature

PVC

(Polyvinylchloride)

Medium working temperature of hard unyielding thermal engineering plastic.

Alkali, acid, salt solvent, oil, fat, diesel

≈60℃

 

PE

(Polyethylene)

Hard unyielding plastic, suitable for low temperature, low water absorption

Alkali, acid, salt solvent, many organic solvents such as alcohol, ester, ketone

≈60℃

 

PP(Polypropylene)

Hardness and unyieldingness> PE, but as temperature decreases the hardness also can be reduced, and the working temperature is higher than PE

Alkali, acid, salt solvent, many organic solvents such as alcohol, ester, ketone

≈100℃

 

PVDF

(Polyvinyldene-fluoride)

Resistance to high temperature and low temperature

Alkali, acid, salt solvent, many organic solvents such as alcohol, ester, ketone, nitric acid, H2O2 and almost all chemicals

≈120℃

 

PTFE (Polytetrafluoroethylene-“Teflon”)

 

Very high working temperature, reduced hardness, low creep resistance

 

≈180℃

 

 

Name

DIN 7728

Proportion
g/cm3

Conversion coefficient

Polypropylene

PP

0,9-0,92

 

Polypropylene,heat stabilized

PPH

0,915

1

 

Polyethylene

HDPE

0,95

1,04

 

Polyvinylchloride

PVC

1,38

1,51

 

Polyvinylchloride,chlorinated

C-PVC

1,55

1,69

Polyether Sulfone

PES

1,37

1,50

 

Fluorinated Polymer

PVDF

1,78

1,95

 

PFA

2,15

2,35

 

FEP

2,15

2,35

 

ETFE/ECTFE

1,68

1,84

Advantage of plastic internals compared to metal internal parts:
Corrosion resistance, especially acid, alkali, etc.
In the multiple objective of chemical production, the plastic internals compared with ceramic internals have better hydraulic performance
Clear price advantage compared with a lot of metal and alloy
A wide range of applications in many industrial fields
Disadvantages of plastic internals compared with metal internals:
Low working temperature
Higher wall thickness

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